<ol><li>one<ol style="list-style-type:lower-alpha"><li>nested list 1</li><li>nested list 2<br /><br />a paragraph created with shift + enter surrounded by two empty lines (also created with shift+enter)<br /><br /></li><li>nested list 3</li><li>nested list 4</li></ol></li><li>two</li><li>three</li><li>four</li></ol>